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Results 21 - 40 of 111.


Environment - Earth Sciences - 28.08.2019
Tiny Toxins: How Algal Blooms Affect Coastal Systems Through a Complex Web of Interactions
Tiny Toxins: How Algal Blooms Affect Coastal Systems Through a Complex Web of Interactions
Think summertime and the mind usually wanders to warm thoughts of sand, sunscreen, and fireworks. But increasingly summertime fun is being interrupted by algal blooms. From the Atlantic seaboard to the Gulf of Mexico, from the Great Lakes to the Pacific coast, harmful algal blooms are shutting down beaches, killing fish, birds, and other wildlife, and contaminating drinking water. The economic impacts of an algal bloom can be severe, especially if the algae become toxic.

Earth Sciences - 27.08.2019
'Surrey swarm' earthquakes not caused by nearby oil extraction, says study
’Surrey swarm’ earthquakes not caused by nearby oil extraction, says study
Imperial College London research has found no evidence that oil extraction caused recent earthquakes known as the 'Surrey swarm' in Surrey and Sussex. The series of 34 small earthquakes between April 2018 and May 2019 occurred within 10 km of two active oil extraction sites at Brockham and Horse Hill in Surrey.

Earth Sciences - Physics - 21.08.2019
New theory explains earthquakes we can’t feel
Researchers have explained mysterious slow-moving earthquakes known as slow slip events with the help of computer simulations. The answer, they learned, is in rocks' pores. The Earth's subsurface is an extremely active place, where the movements and friction of plates deep underground shape our landscape and govern the intensity of hazards above.

Astronomy / Space Science - Earth Sciences - 20.08.2019
All instruments onboard Rosalind Franklin rover
All instruments onboard Rosalind Franklin rover
The full suite of scientific instruments, including cameras that will give us our eyes on Mars, the drill that will retrieve pristine soil samples from below the surface, and the onboard laboratory that will seek out signs of life are all installed on the ExoMars rover. The rover, named after the pioneering scientist Rosalind Franklin , is part of the ESA-Roscosmos ExoMars programme, and is nearing completion at Airbus Defence and Space, Stevenage, UK.

Environment - Earth Sciences - 20.08.2019
Methods for reducing the risks of melting glaciers
Methods for reducing the risks of melting glaciers
Under a pilot project being spearheaded by the Swiss Agency for Development and Cooperation (SDC), a team of experts - including civil and environmental engineers from EPFL - are studying methods to help protect a region of the Andes Mountains threatened by glacial retreat. The testing phase of the pilot project will conclude at the end of the month.

Environment - Earth Sciences - 15.08.2019
Ice sheets impact core elements of the Earth's carbon cycle
Ice sheets impact core elements of the Earth’s carbon cycle
The Earth's carbon cycle is crucial in controlling the greenhouse gas content of our atmosphere, and ultimately our climate. Ice sheets which cover about 10 percent of our Earth's land surface at present, were thought 20 years ago to be frozen wastelands, devoid of life and with supressed chemical weathering - irrelevant parts of the carbon cycle.

Earth Sciences - Computer Science / Telecom - 13.08.2019
Monitoring the Matterhorn with millions of data points
Monitoring the Matterhorn with millions of data points
A unique project is linking in-situ measurements with natural hazards research. For the past ten years, a network of wireless sensors on the Matterhorn's Hrnli ridge has been constantly streaming measurement data on the condition of steep rock faces, permafrost and prevailing climate. The project leader, Jan Beutel, reviews progress to date.

Environment - Earth Sciences - 13.08.2019
Studying the surging seaweed that is sargassum
Sargassum seaweed covers a beach in Mexico earlier this summer. Photo: Victor Ruiz/Associated Press Sargassum seaweed covers a beach in Mexico earlier this summer. Photo: Victor Ruiz/Associated Press With beaches from Mexico to northern Florida overrun by smelly sargassum, University of Miami researchers are investigating everything from the seaweed's movement to its chemical composition.

Earth Sciences - Physics - 08.08.2019
Scientists uncover deep-rooted plumbing system beneath ocean volcanoes
Cardiff University scientists have revealed the true extent of the internal ‘plumbing system' that drives volcanic activity around the world. An examination of pockets of magma contained within crystals has revealed that the large chambers of molten rock which feed volcanoes can extend to over 16 km beneath the Earth's surface.

Earth Sciences - 07.08.2019
Earth’s last magnetic field reversal took far longer than once thought
Earth's magnetic field seems steady and true - reliable enough to navigate by. Yet, largely hidden from daily life, the field drifts, waxes and wanes. The magnetic North Pole is currently careening toward Siberia , which recently forced the Global Positioning System that underlies modern navigation to update its software sooner than expected to account for the shift.

Environment - Earth Sciences - 06.08.2019
How the Pacific Ocean influences long-term drought in the Southwestern U.S
How the Pacific Ocean influences long-term drought in the Southwestern U.S
The Southwest has always faced periods of drought. Most recently, from late 2011 to 2017, California experienced years of lower-than-normal rainfall. El Nio is known to influence rain in the Southwest, but it's not a perfect match. New research from the University of Washington and the Woods Hole Oceanographic Institution explores what conditions in the ocean and in the atmosphere prolong droughts in the Southwestern U.S. The answer is complex, according to a study published Aug.

Earth Sciences - Environment - 05.08.2019
Maya more warlike than previously thought
This view from a recent laser (LIDAR) survey shows the entire ceremonial center stretching for 2 kilometers along a limestone ridge overlooking Laguna Ek'Naab (white spot at right), the sampling site for a paleoenvironmental study in Guatemala. (Image courtesy of Francisco Estrada-Belli PACUNAM & Tulane University) The Maya of Central America are thought to have been a kinder, gentler civilization, especially compared to the Aztecs of Mexico.

Earth Sciences - 31.07.2019
Faint foreshocks foretell California quakes
Faint foreshocks foretell California quakes
Minor shocks presaged impending main shocks days to weeks before the big event LOS ALAMOS, N.M., July 31, 2019-New research mining data from a catalog of more than 1.8 million southern California earthquakes found that nearly three-fourths of the time, foreshocks signalled a quake's readiness to strike from days to weeks before the the mainshock hit, a revelation that could advance earthquake forecasting.

Earth Sciences - 30.07.2019
Predicting seismic activity at fracking sites to prevent earthquakes
Predicting seismic activity at fracking sites to prevent earthquakes
Scientists from the University of Bristol have found a more effective way to predict seismic activity at hydraulic fracturing sites, ensuring that potential earthquake activity remains within safe levels. Hydraulic fracturing, or fracking, is a technique designed to recover gas and oil from shale rock by drilling down into the earth and injecting a mixture of water and sand at high-pressure, creating fractures that allow the gas or oil to flow out.

Earth Sciences - Physics - 29.07.2019
Numerical model pinpoints source of pre-cursor to seismic signals
Numerical model pinpoints source of pre-cursor to seismic signals
Research could one day enable accurately predicting earthquakes Previous machine-learning studies found that the acoustic signals detected from an earthquake fault can be used to predict when the next earthquake will occur. Ke Gao LOS ALAMOS, N.M., July 29, 2019-Numerical simulations have pinpointed the source of acoustic signals emitted by stressed faults in laboratory earthquake machines.

Environment - Earth Sciences - 24.07.2019
Volcanoes shaped the climate before humankind
Volcanoes shaped the climate before humankind
Five large volcanic eruptions occurred in the early 19th century. They caused cooling and - as a study led by the University of Bern shows - to drying in the monsoon regions and glaciers growing in the Alps. The study shows that the pre-industrial climate was not constant: if one takes this cold period as the starting point for current global warming, the climate has already warmed up more than assumed in the current discussions.

Earth Sciences - 11.07.2019
New Sensor Could Shake Up Earthquake Response Efforts
New Sensor Could Shake Up Earthquake Response Efforts
Last week's massive southern California earthquakes shut down Ridgecrest Regional Hospital throughout the July 4 holiday weekend while the tiny town of Ridgecrest assessed the damages. A new optical sensor developed at Lawrence Berkeley National Laboratory (Berkeley Lab) could speed up the time it takes to evaluate whether critical buildings like these are safe to occupy shortly after a major earthquake.

Palaeontology - Earth Sciences - 10.07.2019
Small Wyoming dinosaur helps rewrite the evolutionary story of birds, flight
An artistic rendering of what Lori, scientifically known as Hesperornithoides miessleri, may have looked like when she was alive roughly 150 million years ago. Image by Gabriel Ugueto Scientists have long known that birds and dinosaurs are related, but as with many families, it's complicated. There are dinosaurs with feathers, but no wings, and dinosaurs with feathery wings that couldn't fly.

Environment - Earth Sciences - 03.07.2019
Influence in absentia
Influence in absentia
The preferred food of pike in shallow lakes in Denmark and Sweden is roach. Seven in ten fish found by researchers in the stomachs of pike were roach - and the numbers tended to be even higher in wintertime. The roach that pike ate in lakes with tributary or outflowing rivers were, admittedly, smaller during the winter, and became somewhat thinner as winter went on.

Earth Sciences - Environment - 02.07.2019
Atmospheric rivers getting warmer along U.S. West Coast
A new method for observing water within ice has revealed stored meltwater that may explain the complex flow behavior of some Greenland glaciers, an important component for predicting sea-level rise in a changing climate. Scientists are training machine learning algorithms to help shed light on earthquake hazards, volcanic eruptions, groundwater flow and longstanding mysteries about what goes on beneath the Earth's surface.

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